Ask an Astronomer

By NASA's Spitzer Science Center / IPAC / NASA / Caltech

Real NASA astronomers answer questions about the exciting science of astronomy.... more

· Natural Sciences

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FAQs about Ask an Astronomer:

How many episodes does Ask an Astronomer have?

The podcast currently has 29 episodes available.

Ask an Astronomer episodes:

December 18, 2007 Infrared: More Than Your Eyes Can See
Dr. Michelle Thaller explains infrared light in this older video, produced by NASA's Spitzer Space Telescope (then known as the Space Infrared Telescope Facility) before it launched.
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November 05, 2007 M51 and Gizmo in "Half-Baked Plan"
In this animated 'Ask an Astronomer' special, innocent alien M51 moves the Earth into a closer orbit around the sun, and learns an important lesson about life in the Universe.
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September 14, 2007 "What happens when galaxies collide?" (Ask an Astronomer)
Dr. Varoujan Gorjian takes us inside galactic collisions in this 'Ask an Astronomer' video.
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July 27, 2007 "What is the nearest galaxy to the Milky Way?" (Ask Astron.)
Dr. Michelle Thaller explains that the answer isn't as simple as you might think!
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February 12, 2007 "Why isn't Pluto a planet anymore?" (Ask an Astronomer)
Dr. Robert Hurt explains why Pluto got... well... plutoed.
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August 24, 2006 "How can we see a black hole?" (Ask an Astronomer)
If no light escapes from a black hole, how can we detect them? 'Ask an Astronomer' explains.
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May 24, 2006 "What is a redshift?" (Ask an Astronomer)
'Ask an Astronomer' uses an astronomer, a flying saucer, and a cow to help explain this difficult astronomical concept in simple terms.
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December 09, 2005 "Do the stars really move?" (Ask an Astronomer)
The answer to this 'Ask an Astronomer' question may surprise you!
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October 25, 2005 "Why do we see spiral arms in some galaxies?" (Ask an Astronomer)
'Ask an Astronomer' explains the morphology of one of the most common types of galaxy.
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October 14, 2005 "Why are solar eclipses only visible in some places?" (AaA)
This 'Ask an Astronomer' episode explains eclipses of the sun and why they can't be seen everywhere.
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FAQs about Ask an Astronomer:

How many episodes does Ask an Astronomer have?

The podcast currently has 29 episodes available.